do not glob a path if it exists 'unglobbed'

fix #680

Author: sdementen

git/index/base.py

@@ -377,8 +377,13 @@ def raise_exc(e):
                     continue
             # end check symlink
 
-            # resolve globs if possible
-            if '?' in path or '*' in path or '[' in path:
+            # if abs_path exists, yield it, otherwise resolve globs if possible
+            if os.path.exists(abs_path):
+                # even if the path contains special characters like ?*[ (glob)
+                # if it exists, we take it as such and do not try to resolve globs
+                yield abs_path
+            # otherwise resolve globs if possible
+            elif '?' in path or '*' in path or '[' in path:
                 resolved_paths = glob.glob(abs_path)
                 # not abs_path in resolved_paths:
                 #   a glob() resolving to the same path we are feeding it with